Ribbon loom



Oct. 26, 1926. 1,604,365

E. MUTZBERG v RIBBON LOOM Filed May 15, 1926 2 Sheets-Sheet 1 INVENTOR Oct. 26 1926. 1,604,365 E. MUTZBERG RIBBON LOOM 5 INVENTOR Patented Oct. 26, 1926.

UNITED STATES EMIL MUTZBERG, OF RICHMOND HILL, NEW YORK;

RIBBON LOOM.

Application filed May 15,

merchandise or with some variations in con- 55 struction for the weaving of .goods of any desired or suitable widths.

Among the objects of this invention is to provide a loom for the weaving of piece goods with maximum facility as to time, labor, and floor space, and with the utmost economy of material.

More specifically, according to one object or purpose of this improvement I employ for each unit of operation a single weft or filling thread, or a multiple thread if additional filling is desired but treated as a single thread, the same being carried in and out of the field of operation by what I term a needle as distinguished from a shuttle, no shuttle being employed in the usual sense, and no heater or lay is employed except as such weft carrying needle may be regarded as a beater or lay during certain intervals or steps of the weaving operation. For this. reason a vast economy of materialis realized because of the reduced frictional wear upon the various component threads of the work which under the old or common practice are subjected to an unreasonable amount of wear upon one another and from the operating parts of the loom as heretofore practised.

Another object of the invention is to provide means for co-operating with'the weft carrying needle to make an interlocked selvage by the employment of a separate thread referred to hereinafter as the locking or knitting thread, an expedient resorted to by reason of the fact that the weft or filling thread carrying needle goes in and'out of the work at each change of the shed, and hence other wise would leave the weft thread unlocked on the side of the work remote from the member that supports and carries the needle.

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and-while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings in which like reference characters designate the same parts in the several views, and in which Figure 1 is a vertical sectional view on ap- 1926. Serial No. 109,256.

proximately the vertical plane of the line 11 of Fig. 2, but with the operating parts in changed position.

Fig. 2 is a plan view.

Figs. 3, 4, 5, and 6 are detail diagrams indicating successive steps or positions in the operation of the machine.

Referring now more specifically to the drawings I show a loomcomprising a frame 10 in the front portion of which is journaled a power shaft 11 adapted to be driven continuously from any suitable source of power not shown, and upon which is fixed a cam wheel 12 having formed in one side face thereof a cam groove 13 having a concentric or dwell portion 13, a short action cam 13", another dwell or concentric portion 13, and a second cam 13, the time interval or amplitude of which is greater than the cam 13!, but both cams are of practically the same radius.

In the upper portion of the frame are provided as many slideways 14 as may be necessary according to the length of the machine, but indicated as two in number, and in these slideways are mounted for forward and rearward reciprocations a air of slides 15 between which extends guidlng means 16 shown in the form of two parallel rods which together with the slides 15 constitute a carriage which by any suitable connections from the power shaft and cam 12 is caused to be given two forward and two rearward reciprocations at each rotation of the-power shaft 11, and which reciprocations may be thought of asof'about an inch in length for an ordinary ribbon loom. but I wish it to be understood distinctly that this suggestion of measurement is only for the sake of description and not as any limitation in scope of the construction or its operation. means indicated to effect this movement of the carriage includes a rock shaft 17 journaled at the front side of the loom near the bottom of the frame and to which are connected a pair of upstanding arms 18 or as many as may be required for the loom if it is of considerable length. These arms are connected respectively by means of links 19 to the carriage slides 15. An arm 20 is fixedto the rock shaft 17 adjacent to the lane of the cam wheel 12 and carries at its ree end a roller 21 operating in the cam groove 13 whereby the action of the cam'wheel serves to cause positively the oscillations of the rock The Bil

shaft 17 in both directions and consequently the forward and rearward movements of the carriage along the slideways 14.

I have indicated in the drawings provision for three units of operation, but the break in Fig. 2 is intended to suggest that the loom may be of any suitable length and for the production of any desired number of units of work. These units are represented by R and each ribbon so fabricated is composed of warp threads W guided through areed 22 which being of well known construction is indicated only diagrammatically but to be understood as fixed in position, and in Fig. 1, I indicate the warp threads as formed in two series as is usual for the making and changing of the shed through suitable mechanism likewise not shown for the reason that it is conventional. In addition to the warp threads W, I employ a filling thread F, which as suggested above may be either single or multiple as may be desired according to the character of the thread orthe bulk of the ribbon to be formed. I wish it to be understood that while for convenience I refer to the work as a ribbon, it may be any other type or character of woven material. Whereas in the usual weaving operation there are two independent filling or weft threads, each carried by a shuttle to and fro transversely of the line of operation, in this The blocks or carriers 25 are held by the guide rods from tilting or other movement in any direction except a right or left sliding or reciprocating movement in and out. a The extent of lateral movement of the needle carrier and needle is according to the width of the goods to be woven, the point of the needle being caused to pass in between the two sets of warp threads to the position shown in Figs. 2, 3, 4, and 5, and carrying the filling thread F into place through the work and to be returned again out of the work as shown in Fig. 6, bringing the thread F back again producing in effect a double thread weft.

Any suitable means may be provided to reciprocate the needles in and out as just described, but as shown I provide for each unit a drum shaped cam 26 having a-continuous cam groove'in its cylindrical surface at 27, said groove having formed at diametrically opposite points relatively short dwells 27 and 27, the latter being longer than the former, while between these two dwells the walls of the cam groove 27 act in succession upon a roller 28 journaled upon a stud projecting downward from the needle carrier 25 and just beneath the horizontal plane of the guide rods 16. The parallel portions or dwells 27 and 27 are long enough and the drumv cams26 are large enough in diameter to take care of the reciprocations of the carriage forward and rearward, remembering that the rollers 28 being connected to the needle carriers are reciprocated with the carriage forward and rearward. The cams 26 are mounted upon a shaft 29 journaled in fixed bearings 30 in the main frame 10. Attached to the same shaft 29 are a plurality of cam wheels 31 shown as two in number in Fig. 2, and each is provided with a face cam groove 32 similar in general character to the groove at 13 in the wheel 12 but having a single cam throw instead of two.

As described above while the needle passes in and out of the work, it forms a loop in the weft, and consequently this loop must be locked for the reason that the shed is not changed while the loop is being formed or placed. -Any suitable means may be provided to so lock the loop at 7. For this purpose I employ a locking thread L which is guided through the eye 33 of a guide or lifter 34 extending upward from a bar 35 supported upon a plurality of arms 36 mounted coaxially upon a supporting rod 37 near the front side of the loom above the power shaft. These arms 36 carry antifri'ction rollers 38 which operate in the grooves 32 "formed in the cam wheels 31. These grooves 32 have only one cam or throw and hence for each rotation of the shaft 29 the fingers 34 are lifted once, and the period of time is brief in proportion to the main time of rotation. As shown herein the locking thread L is caused to co-operate by a knitting act-ion with the loops 7 of the filling thread. To this end I employ for each unit a machine knitting needle 39 of well known form and having a hook 40 and a latch 41. The knitting needle 39 passes beneath the carrier needle 23 and between such needle and the thread F as shown in Fig. 3, when the knitting needle 39 is given a rearward reciprocation, the latch at this time being open whereby the hook engages the loop portion Z of the anchor thread and draws it forward as shown in Fig. '5, forming aknitted loop Z and locking the loop f as shown in Fig. 6. The finger 34 is lifted coincident with this rearward movement of the knitting needle as shown in Fig. 3 to bring the thread L into favorable position to be grasped by the hook 40. This knitting action is very quick in comparison with the weaving action of the needles 23.

The means shown for actuating the knitting needles includes a shaft 42 at the rear portion of the loom parallel to and r0- tated by any suitable means at the same rate III neocsee as the shafts 11 and 29. As many cam wheels 43 as may be desired are fixed to the shaft 42 and each is provided with a cam groove 44 in which operates an anti-friction roller 45 carried at the rear end of a connecting rod 46 pivoted at its frontend to an upstanding arm or lever 47 having fixed pivot connection at 48 near the bottom of the frame. The rear end of the rod 46 is provided with a guide yoke 49 embracing the shaft 42 whereby the rod is held at proper operative position and given ample support for forward and rearward reciprocations coincident with the action of the roller 45 in the groove 44,

and whereby the arms 47 are given forward and rearward oscillations. To the upper ends of the arms 47 is connected a needle bar 50 to which the knitting needles 39 are fixed. It will thus be seen that for each rotation of the several shafts the fingers 34 will be given one up and down movement, the knitting needles will be given One forward and rearward movement, the needle carriage will be given two forward and two rearward reciprocations, and the needle carriers and needles 23 will be given a movement to the right and to the left or in and out of the work in addition to the four fore and aft reciprocations with the main carriage. In

other words, and more definitely, the action of the needles 23 and knitting needles 39 may be traced as follows: After the position of Fig. 6 the needle 23 is carried to the right or inward by one throw of the cam groove 27 to bring the needle to the position of Fig. 3.. Then the finger 34 is lifted and the knitting needle 39 is shot rearward as shown in Fig. 3 with a quick movement as a result of the action of the cam wheels 31 and 43 respective ly, a condition quickly followedas shown in.

Figs. 4 and 5 by the return of the knitting needle to its forward osition and the lowering of the finger 34 orming the loop Z and the locking of the loop f as in Fig. 6. The action of the cam portions 13 in the wheel 12 follows, bringing the needle 23 forward into beating position, followed immediately by the return to the dwell 13, and thence the needle is withdrawn by the action of the opposite cam of the groove 27, and this is followed by another forward movement of the needle 23 which serves to draw the sec 0nd half of the loop f back into position at which time the shed-is changed. Since the shed is changed no locking of the weft thread is necessary on the left side of the ribbon. The last forward movement of the needle 23 is caused by the longer cam 13 giving time for the changing of the shed, but this is followed by the return of the needle 23 in position to be projected endwise or inward for the next cycle of operations.

,I claim: I I

1. In a loom of the class set forth, the comhination of means for guiding two series of warp threads forward for the formation of a woven fabric and constituting a changeable shed,' a needle, means to project the needle in and out between the two series of warp threads, said needle serving thus to carry a filling thread into place between said two series of warp threads, means to actuate the needle as a beater while between the two series of warp threads. and means to introduce an anchoring thread for the filling threads along the edge remote "from the means carrying the needle.

2. In a loom of the class set forth, the combination of a frame including slideways, a pair of slides movable; forward and rear.- ward along said slideways, supporting means extending transversely of the loom between said slides and constituting therewith a carriage and over which the fabric being woven is adapted to pass forward, a, needle having an eye for carrying a weft or filling thread, carrier means for the needle mounted upon said supporting means whereby the needle and supporting means therefor are caused to move with the carriage forward and rearward, and means acting upon the needle to move it transversely of the fabric being woven.

3. In a loom of the class set forth, the com-- for the needle mounted upon said carriage and movable forward and rearward therewith, and means acting upon the needle for shifting it parallel to the supporting means, once to the right and once to the left at each rotation of the aforesaid shaft.

4. In a loom of the class set forth, the combination .of a frame, a pair of parallel shafts journaled in said frame, a needle for carryin a filling thread into and out of the fabric being. woven and forming a loop therein at each projection of the needle, means mounted on one of said shafts for causing the projection and retraction of the needle, and means actuating from the other shaft for causing reciprocations of the needle in forward and rearward directions transverse to the direction of its rejection.

5. Mechanism as set forth in c aim 4 in cluding means to lock the successivedoops of filling thread in position where they are placed by said needle.

6. Mechanism as set forth in claim 4 including means for guiding a locking thread for the filling thread loops and mechanism to so knit the locking thread in relation to said loops as to form a knittedselvage.

7. In a loom of the class set forth, the combination of a frame, a carriage reciprocatable forward and rearward along the frame and over which the woven fabric is adapted to pass forward, a plurality of needles mounted-upon said carriage and movable therewith in its reciprocations', the needles being provided with guiding means for filling threads with respect to a like plurality of strips of material to be woven, a shaft, a plurality of cylindrical cams carried by said shaft and co-operating with the respective needles for projecting them into and out of the respective strips of woven material where the needles place the filling 8. Mechanism as set forth in claim 7 in cluding a plurality of knitting needle devices for the respective filling thread needle mechanisms, and means to actuate the knitting needles to introduce a locking thread by knitting action along the respective selvages and operative coincident with that reciprocation of the filling thread needles while in the work. i

In testimony whereof'I aflix my signature.

EMIL MUTZBERG. 

